US8950293B2 - Ratchet wrench - Google Patents

Ratchet wrench Download PDF

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Publication number
US8950293B2
US8950293B2 US13/737,086 US201313737086A US8950293B2 US 8950293 B2 US8950293 B2 US 8950293B2 US 201313737086 A US201313737086 A US 201313737086A US 8950293 B2 US8950293 B2 US 8950293B2
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United States
Prior art keywords
toothed portion
driving member
movable jaw
movable
pivotal
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US13/737,086
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English (en)
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US20140096652A1 (en
Inventor
Bobby Hu
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Individual
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Individual
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Publication of US20140096652A1 publication Critical patent/US20140096652A1/en
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Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type

Definitions

  • the present invention relates to a ratchet wrench and, more particularly, to an open-ended ratchet wrench that can be cleaned with water.
  • U.S. Pat. No. 4,631,990 discloses an open-ended ratchet wrench including a fixed jaw and a pivoting jaw.
  • a box-end insert, a socket drive insert, and an open-end insert are selectively received between the fixed jaw and the pivoting jaw.
  • a bottom pawl and a side pawl are respectively mounted in two pawl seats in the fixed jaw.
  • the bottom pawl and the side pawl drive the insert for driving an object, such as a nut or bolt head or the like.
  • the insert provides a ratcheting function without repeatedly engaging the ratchet wrench with the object.
  • the pivoting jaw of the ratchet wrench is manually operated to allow the user to change the insert.
  • the ratcheting function of the ratchet wrench is achieved by other components. Namely, the costs for manufacturing and assembly are increased by the complicated components of the ratchet wrench.
  • the torque capacity of the ratchet wrench is insufficient such that the components inside the ratchet wrench are liable to damage if the user applies a large force. Further, the components inside the ratchet wrench are small and, thus, difficult to manufacture while having a high maintenance cost.
  • an open-ended ratchet wrench including a body.
  • the body includes a handle portion and an operative end.
  • the handle portion is adapted to be operated by a user to rotate the body about a rotating axis.
  • the operative end includes a fixed jaw, a first pivotal portion, and a second pivotal portion.
  • a driving member is mounted to the fixed jaw and rotatable relative to the fixed jaw about the rotating axis, with the driving member having a central axis coincident with the rotating axis.
  • the driving member includes an inner periphery and an outer periphery spaced from the inner periphery in a radial direction perpendicular to the central axis.
  • the inner periphery of the driving member is adapted to hold an object to be driven to rotate about the rotating axis.
  • the outer periphery of the driving member includes a toothed portion.
  • a first movable jaw includes a first pivotal end and a first movable end opposite to the first pivotal end.
  • the first pivotal end is pivotably connected to the first pivotal portion of the operative end of the body.
  • the first movable end includes a side facing the driving member and having a first toothed portion.
  • the first toothed portion meshes with the toothed portion of the driving member.
  • a second movable jaw includes a second pivotal end and a second movable end opposite to the second pivotal end.
  • the second pivotal end is pivotably connected to the second pivotal portion of the operative end of the body.
  • the second movable end includes a side facing the driving member and having a second toothed portion. The second toothed portion meshes with the toothed portion of the driving member.
  • Each of the first and second movable jaws is pivotable between a first position and a second position.
  • the first toothed portion engages with the toothed portion of the driving member when the first movable jaw is in the first position.
  • the first toothed portion disengages from the toothed portion of the driving member when the first movable jaw is in the second position.
  • the second toothed portion engages with the toothed portion of the driving member when the second movable jaw is in the first position.
  • the second toothed portion disengages from the toothed portion of the driving member when the second movable jaw is in the second position.
  • the driving member further includes an opening extending from the inner periphery through the outer periphery, forming first and second end faces extending between the inner and outer peripheries.
  • the opening has a first length between the first and second end faces in a circumferential direction about the rotating axis.
  • Each of the first and second toothed portions includes a plurality of teeth, with the rearmost tooth of the first toothed portion located between the foremost tooth of the first toothed portion and the first pivotal end, with a rearmost tooth of the second toothed portion located between the a foremost tooth of the second toothed portion and the second pivotal end.
  • a spacing between the foremost tooth of the first toothed portion and the rearmost tooth of the second toothed portion in the circumferential direction is larger than the first length.
  • a second length between the foremost tooth and the rearmost tooth of the first toothed portion in the circumferential direction is smaller than the first length.
  • a third length between the foremost tooth and the rearmost tooth of the second toothed portion in the circumferential direction is smaller than the first length.
  • the toothed portion of the driving member has a first pitch
  • the first toothed portion has a second pitch equal to the first pitch
  • the second toothed portion has a third pitch equal to the first pitch
  • the second pivotal portion is located between the fixed jaw and the first pivotal portion.
  • the first movable jaw is pivotable relative to the body about a first pivot axis parallel to the rotating axis.
  • the second movable jaw is pivotable relative to the body about a second pivotal axis parallel to the rotating axis.
  • the third length is equal to the second length.
  • two teeth of the toothed portion of the driving member mesh with the foremost tooth of the second toothed portion and a tooth of the second toothed portion immediately behind the foremost tooth of the second toothed portion.
  • the two teeth of the toothed portion of the driving member also mesh with the rearmost tooth of the first toothed portion and a tooth of the first toothed portion immediately in front of the rearmost tooth of the first toothed portion.
  • the open-ended ratchet wrench further includes another second movable jaw identical to the second movable jaw, with the first movable jaw located between the second movable jaws.
  • a spacing between the first toothed portion and the fixed jaw is smaller than a spacing between the fixed jaw and each second movable jaw.
  • the spacing between the first toothed portion and the fixed jaw is smaller than an outer diameter of the toothed portion of the driving member.
  • the driving member further includes two limiting rings spaced from each other along the central axis, with the first movable end of the first movable jaw and the second movable ends of the second movable jaws located between the two limiting rings.
  • Each limiting ring has a maximum outer diameter larger than the outer diameter of the toothed portion of the driving member.
  • each limiting ring has an operative portion on an outer periphery thereof.
  • the operative portion is adapted to be operated by the user to rotate the driving member.
  • the operative end of the body further includes a first open space and a second open space.
  • the first pivotal end of the first movable jaw is received in the first open space.
  • the second pivotal end of the second movable jaw is received in the second open space.
  • a first gap is defined between the first pivotal end of the first movable jaw and a wall face of the first open space.
  • a second gap is defined between the second pivotal end of the second movable jaw and a wall face of the second open space.
  • the fixed jaw includes two first limiting portions spaced from each other along the rotating axis.
  • Two second limiting portions are formed on two sides of the toothed portion of the driving member. Each second limiting portion rotatably abuts one of the first limiting portions.
  • FIG. 1 shows a perspective view of a ratchet wrench according to the present invention.
  • FIG. 2 shows an exploded, perspective view of the ratchet wrench of FIG. 1 .
  • FIG. 3 shows another exploded, perspective view of the ratchet wrench of FIG. 1 .
  • FIG. 4 shows a cross sectional view taken along section line 4 - 4 of FIG. 1 .
  • FIG. 5 shows a cross sectional view taken along section line 5 - 5 of FIG. 1 .
  • FIG. 6 is a view similar to FIG. 6 , with the ratchet wrench rotated in a clockwise direction.
  • FIG. 7 is a view similar to FIG. 5 , with the ratchet wrench rotated in a counterclockwise direction.
  • FIG. 8 is a view similar to FIG. 7 , with the ratchet wrench further rotated in the clockwise direction.
  • FIG. 9 is a view similar to FIG. 8 , with the ratchet wrench rotated in the clockwise direction.
  • FIG. 10 is a view similar to FIG. 9 , with the ratchet wrench rotated in the counterclockwise direction.
  • FIG. 11 is a cross sectional view illustrating cleaning of the ratchet wrench.
  • an open-ended ratchet wrench 10 includes a body 20 , a driving member 30 , a first movable jaw 40 , and at least one second movable jaw 50 .
  • the body 20 includes a handle portion 21 and an operative end 22 .
  • the handle portion 21 is adapted to be operated by a user to rotate the body 20 about a rotating axis.
  • the operative end 22 includes a fixed jaw 23 , a first pivotal portion 221 , and a second pivotal portion 222 located between the fixed jaw 23 and the first pivotal portion 221 .
  • the fixed jaw 23 includes two first limiting portions 24 spaced from each other along the rotating axis. Each first limiting portion 24 is a ridge in the form shown.
  • the operative end 22 further includes a first open space 25 and a second open space 26 .
  • a first receptacle 27 is defined in a wall face of the first open space 25 .
  • a first spring 271 and a first engaging member 272 are received in the first receptacle 27 .
  • At least one second receptacle 28 is defined in a wall face of the second open space 26 .
  • two second receptacles 28 are defined in the wall face of the second open space 26 , with each second receptacle 28 receiving a second spring 281 and a second engaging member 282 .
  • the driving member 30 is mounted to the fixed jaw 23 and pivotable relative to the fixed jaw 23 about the rotating axis, with the driving member 30 having a central axis coincident with the rotating axis.
  • the driving member 30 includes an inner periphery 31 and an outer periphery 32 spaced from the inner periphery 31 in a radial direction perpendicular to the central axis.
  • the inner periphery 31 of the driving member 30 is adapted to hold an object 92 to be driven to rotate about the rotating axis.
  • the outer periphery 32 of the driving member 30 includes a toothed portion 33 including a plurality of teeth having a first pitch.
  • the driving member 30 further includes an opening 34 extending from the inner periphery 31 through the outer periphery 32 , forming first and second end faces 38 and 39 extending between the inner and outer peripheries 31 and 32 .
  • the opening 34 has a first length L 1 between the first and second end faces 38 and 39 in a circumferential direction about the rotating axis.
  • the driving member 30 is substantially C-shaped in cross section.
  • the opening 34 allows passage of a pipe 90 into a space defined by the inner periphery 31 .
  • the inner periphery 31 of the driving member 30 can engage with an object 92 , such as a nut, on the pipe 90 .
  • the driving member 30 further includes two limiting rings 36 spaced from each other along the central axis, with the toothed portion 33 located between the limiting rings 36 .
  • Each limiting ring 36 has an operative portion 37 on an outer periphery thereof, with the operative portion 37 adapted to be operated by the user to rotate the driving member 30 .
  • each operative portion 37 has knurls to increase friction with the fingers of the user.
  • Each limiting ring 36 has a maximum outer diameter larger than an outer diameter of the toothed portion 33 of the driving member 30 .
  • Two second limiting portions 35 are formed on two sides of the toothed portion 33 of the driving member 30 .
  • each second limiting portion 35 is a groove located between the toothed portion 33 and one of the two limiting rings 36 .
  • Each groove has a bottom wall rotatably abutting one of the ridges.
  • the first movable jaw 40 includes a first pivotal end 41 and a first movable end 42 opposite to the first pivotal end 41 .
  • the first pivotal end 41 is pivotably connected to the first pivotal portion 221 of the operative end 22 of the body 20 .
  • the first movable jaw 40 is pivotable relative to the body 20 about a first pivot axis parallel to the rotating axis.
  • the first pivotal end 41 of the first movable jaw 40 is received in the first open space 25 , with a first gap 251 defined between the first pivotal end 41 of the first movable jaw 40 and the wall face of the first open space 25 .
  • the first movable end 42 includes a side facing the driving member 30 and having a first toothed portion 43 .
  • the first movable end 42 is located between the limiting rings 36 and between the second limiting portions 35 .
  • the first toothed portion 43 meshes with the toothed portion 33 of the driving member 30 .
  • the first toothed portion 43 includes a plurality of teeth having a second pith equal to the first pitch, with the rearmost tooth of first toothed portion 43 located between the foremost tooth of the first toothed portion 43 and the first pivotal end 41 .
  • the first toothed portion 43 has a second length L 2 between the foremost tooth and the rearmost tooth thereof in the circumferential direction. The second length L 2 is smaller than the first length L 1 .
  • the at least one second movable jaw 50 includes two second movable jaws 50 , with the first movable jaw 40 located between the second movable jaws 50 .
  • Each second movable jaw 50 includes a second pivotal end 51 and a second movable end 52 opposite to the second pivotal end 51 .
  • the second pivotal end 51 of each second movable jaw 50 is pivotably connected to the second pivotal portion 222 of the operative end 22 of the body 20 .
  • the second movable jaw 50 is pivotal relative to the body 20 about a second pivotal axis parallel to the rotating axis.
  • the second pivotable end 51 of each second movable jaw 50 is received in the second open space 26 , with a second gap 261 defined between the second pivotal end 51 and the wall face of the second open space 26 .
  • the second movable end 52 of each second movable jaw 50 includes a side facing the driving member 30 and having a second toothed portion 53 , with the second toothed portion 53 meshed with the toothed portion 33 of the driving member 30 .
  • the second toothed portion 53 of each second movable jaw 50 includes a plurality of teeth having a third pitch equal to the first pitch, with the rearmost tooth of the second toothed portion 53 located between the foremost tooth of the second toothed portion 53 and the second pivotal end 51 .
  • the second movable ends 52 of the second movable jaws 50 are located between the limiting rings 36 and between the second limiting portions 35 .
  • the second toothed portion 53 of each second movable jaw 50 has a third length L 3 between the foremost tooth and the rearmost tooth thereof in the circumferential direction. The third length L 3 is smaller than the first length L 1 and equal to the second length L 2 .
  • Two teeth of the toothed portion 33 of the driving member 30 mesh with the foremost tooth of the second toothed portion 53 of each second movable jaw 50 and a tooth of the second toothed portion 53 of each second movable jaw 50 immediately behind the foremost tooth of the second toothed portion 53 .
  • the two teeth of the toothed portion 33 of the driving member 30 also mesh with the rearmost tooth of the first toothed portion 43 and a tooth of the first toothed portion 43 immediately in front of the rearmost tooth of the first toothed portion 43 . This reduces deformation of the toothed portion 33 of the driving member 30 during operation, prolonging the service life of the driving member 30 .
  • a spacing LA between the foremost tooth of the first toothed portion 43 and the rearmost tooth of the second toothed portion 53 in the circumferential direction is larger than the first length L 1 .
  • Each of the first and second movable jaws 40 and 50 is pivotable between a first position and a second position.
  • the first toothed portion 43 is engaged with the toothed portion 33 of the driving member 30 when the first movable jaw 40 is in the first position.
  • the first toothed portion 43 is disengaged from the toothed portion 33 of the driving member 30 when the first movable jaw 40 is in the second position.
  • the second toothed portion 53 of each second movable jaw 50 is engaged with the toothed portion 33 of the driving member 30 when the second movable jaw 50 is in the first position.
  • the second toothed portion 53 of each second movable jaw 50 is disengaged from the toothed portion 33 of the driving member 30 when the second movable jaw 50 is in the second position.
  • the movement paths of the first and second movable jaws 40 and 50 between the first and second positions are similar to each other, providing operational convenience to the user.
  • a spacing between the first toothed portion 43 and the fixed jaw 23 is smaller than a spacing between the fixed jaw 23 and each second movable jaw 50 .
  • the spacing between the first toothed portion 43 and the fixed jaw 23 is smaller than the outer diameter of the toothed portion 33 of the driving member 30 , preventing the driving member 30 from disengaging from between the fixed jaw 23 and the first movable jaw 40 through movement in the radial direction.
  • the first engaging member 272 biases the first movable jaw 40 towards the first position of the first movable jaw 40 under action of the first spring 271 .
  • Each second engaging member 282 biases one of the second movable jaws 50 towards the first position of the second movable jaw 50 under action of the second spring 281 .
  • the first movable jaw 40 includes a first engagement portion 44 facing the first receptacle 27 , with the first engaging member 272 pressing against the first engagement portion 44 to bias the first movable jaw 40 towards the first position of the first movable jaw 40 while forming the second gap 251 .
  • Each second movable jaw 50 includes a second engagement portion 54 facing one of the second receptacles 28 , with the second engaging member 282 pressing against the second engagement portion 54 to bias the second movable jaw 50 towards the first position of the second movable jaw 50 while forming the second gap 261 .
  • the first and second toothed portions 43 and 53 drives the toothed portion 33 of the driving member 30 , moving the object 92 in the clockwise direction.
  • the driving member 30 pushes the first and second movable jaws 40 and 50 towards the second positions, with the first and second toothed portions 43 and 53 sliding relative to the toothed portion 33 of the driving member 30 without driving the driving member 30 and the object 92 .
  • the first and second engaging members 272 and 282 bias the first and second movable jaws 40 and 50 to the first positions.
  • the body 20 rotates relative to the driving member 30 .
  • the first toothed portion 43 moves towards the opening 34 of the driving member 30 . Since the second length L 2 is smaller than the first length L 1 , the first toothed portion 43 is aligned with the opening 34 and disengages from the toothed portion 33 for a period of time while the second toothed portions 53 engage with the toothed portion 33 . In this case, the body 20 can still drive the driving member 30 .
  • the user can move the open-ended ratchet wrench 10 in the clockwise direction to tighten (or loosen) the object 92 , as shown in FIG. 9 .
  • the open-ended ratchet wrench 10 is rotated in the counterclockwise direction such that the body 20 rotates relative to the driving member 30 .
  • the second toothed portions 53 move towards the opening 34 of the driving member 30 . Since the third length L 3 is smaller than the first length L 1 , the second toothed portions 53 are aligned with the opening 34 and disengage from the toothed portion 33 for a period of time while the first toothed portion 43 engages with the toothed portion 33 . In this case, since the spacing LA is larger than the first length L 1 , the body 20 the body 20 can still drive the driving member 30 to drive the object 92 , as shown in FIG. 10 .
  • the positions of the first and second movable jaws 40 and 50 can be adjusted to disengage the driving member 30 from the fixed jaw 23 , the first movable jaw 40 , or the second movable jaws 50 .
  • the user can wash the toothed portion 33 and the first and second toothed portions 43 and 53 .
  • the user can rotate the driving member 30 and clean the exposed portion of the driving member 30 .
  • the dirt 91 entering the first and second gaps 251 and 261 is less likely to get stuck in the first and second gaps 251 and 261 and will fall out of the first and second gaps 251 and 261 after a period of time. Furthermore, the user can use water to rinse the dirt 91 out of the first and second gaps 251 and 261 .
  • the open-ended ratchet wrench 10 has several advantages. Firstly, the open-ended ratchet wrench 10 is durable and will not damage or malfunction in a severe environment after long-term operation. Thus, the user does not have to care about the environment, because the open-ended ratchet wrench 10 will not damage or malfunction due to the dust or dirt in the environment. Even if the dust or dirt enters the open-ended ratchet wrench 10 , the fixed jaw 23 and the first and second movable jaws 40 and 50 can be disengaged from the driving member 30 for cleaning purpose by rinsing the open-ended ratchet wrench 10 with clean water, which is convenient to the user. The manufacturers can save the costs for free replacement or maintenance of the open-ended ratchet wrench 10 while protecting the business reputation.
  • the first and second movable jaws 40 and 50 provide a clamping function and a ratcheting function, effectively saving the costs for manufacturing and maintenance.
  • the user does not have to adjust the open-ended ratchet wrench 10 .
  • Rotating the open-ended ratchet wrench 10 in the clockwise and counterclockwise directions achieves the function of driving the object 92 and the ratcheting function of adjusting the angular position of the open-ended ratchet wrench 10 , reducing difficulties in use.
  • the open-ended ratchet wrench 10 includes at least two movable jaws 40 and 50 that can driving the driving member 30 at the same time. Furthermore, the first and second toothed portions 43 and 53 completely mesh with the toothed portion 33 of the driving member 30 , increasing the torque capacity of the open-ended ratchet wrench 10 and avoiding damage resulting from excessive torque by the user. Furthermore, the first and second movable jaws 40 and 50 can be easily manufactured and assembled, effectively reducing the costs for maintenance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
US13/737,086 2012-10-05 2013-01-09 Ratchet wrench Expired - Fee Related US8950293B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TW101136952A TW201414583A (zh) 2012-10-05 2012-10-05 開放式棘動扳手
TW101136952A 2012-10-05
TW101136952 2012-10-05

Publications (2)

Publication Number Publication Date
US20140096652A1 US20140096652A1 (en) 2014-04-10
US8950293B2 true US8950293B2 (en) 2015-02-10

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ID=50337107

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/737,086 Expired - Fee Related US8950293B2 (en) 2012-10-05 2013-01-09 Ratchet wrench

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US (1) US8950293B2 (enrdf_load_stackoverflow)
JP (1) JP3186979U (enrdf_load_stackoverflow)
DE (1) DE102013108620B4 (enrdf_load_stackoverflow)
TW (1) TW201414583A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10414029B2 (en) 2016-04-06 2019-09-17 Tribus Innovations, LLC Ratchet wrench
US20220314403A1 (en) * 2021-04-06 2022-10-06 Michael A. Miotke Rotational Adjustment Device
US11865677B2 (en) 2018-04-21 2024-01-09 Jeffrey Dean MacDonald Ratcheting wrenches, wrench systems, sockets, and methods of use

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018005133A1 (de) 2018-06-28 2020-01-02 Peter Malkomes Ratschenschlüssel
DE112018007764A5 (de) 2018-06-28 2021-04-08 Peter Malkomes Ratschenschlüssel
TWI858546B (zh) * 2023-02-10 2024-10-11 海峰機械工業股份有限公司 動力旋轉工具用之驅動頭
CN117655966B (zh) * 2024-01-30 2024-04-05 四川懋润电力科技有限公司 一种套筒扳手

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US2527033A (en) * 1947-12-10 1950-10-24 Robert H Rodgers Ratchet wrench
US3921474A (en) * 1974-04-25 1975-11-25 Aljac Devices Limited Ratchet action open-end wrenches
US4631990A (en) 1985-08-02 1986-12-30 Hughes Matthew E Open-ended ratchet wrench
US4718315A (en) * 1982-07-09 1988-01-12 Nitschmann Fred Werner Ratchet-type wrench
US5467672A (en) * 1992-04-20 1995-11-21 Ashby; Earl T. Open end ratchet wrench
US6155140A (en) * 1999-09-09 2000-12-05 Tsai; Tzen Chang Ratchet wrench
US6227076B1 (en) * 1999-03-20 2001-05-08 Jack E. Murray Shaft wrench
US8100036B2 (en) * 2010-02-17 2012-01-24 Ping-Chung Huang Ratchet wrench

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US4441387A (en) * 1982-06-11 1984-04-10 Hendricks Bacel G Open end ratchet wrench
EP0224624A3 (en) * 1985-11-25 1987-11-19 DeSantis, Ercele A. Open end ratchet wrench
US5996445A (en) * 1998-06-04 1999-12-07 Universal Toolcraft Corporation Ratcheting wrench
US6530298B1 (en) * 2000-03-23 2003-03-11 Michael Steffe Ratcheting open-end wrenches
TWM375582U (en) * 2009-09-30 2010-03-11 Shu-Su Chan Ratchet wrench having opening
TW201200303A (en) * 2010-06-25 2012-01-01 li-qing Lin Structure of open spanner
CN102554838B (zh) * 2010-12-24 2014-01-15 伟孚兴业股份有限公司 开口式棘轮扳手及其制造方法
TWM438352U (en) * 2012-05-22 2012-10-01 Yu-Yan Jian Ratchet wrench external pressing control structure

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527033A (en) * 1947-12-10 1950-10-24 Robert H Rodgers Ratchet wrench
US3921474A (en) * 1974-04-25 1975-11-25 Aljac Devices Limited Ratchet action open-end wrenches
US4718315A (en) * 1982-07-09 1988-01-12 Nitschmann Fred Werner Ratchet-type wrench
US4631990A (en) 1985-08-02 1986-12-30 Hughes Matthew E Open-ended ratchet wrench
US5467672A (en) * 1992-04-20 1995-11-21 Ashby; Earl T. Open end ratchet wrench
US5501124A (en) * 1992-04-20 1996-03-26 Ashby; Earl T. Open end ratchet wrench
US6227076B1 (en) * 1999-03-20 2001-05-08 Jack E. Murray Shaft wrench
US6155140A (en) * 1999-09-09 2000-12-05 Tsai; Tzen Chang Ratchet wrench
US8100036B2 (en) * 2010-02-17 2012-01-24 Ping-Chung Huang Ratchet wrench

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10414029B2 (en) 2016-04-06 2019-09-17 Tribus Innovations, LLC Ratchet wrench
US11865677B2 (en) 2018-04-21 2024-01-09 Jeffrey Dean MacDonald Ratcheting wrenches, wrench systems, sockets, and methods of use
US20220314403A1 (en) * 2021-04-06 2022-10-06 Michael A. Miotke Rotational Adjustment Device

Also Published As

Publication number Publication date
DE102013108620B4 (de) 2016-03-10
TW201414583A (zh) 2014-04-16
JP3186979U (ja) 2013-10-31
US20140096652A1 (en) 2014-04-10
TWI482687B (enrdf_load_stackoverflow) 2015-05-01
DE102013108620A1 (de) 2014-04-10

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